1321101343 has 2 divisors, whose sum is σ = 1321101344. Its totient is φ = 1321101342.

The previous prime is 1321101319. The next prime is 1321101361. The reversal of 1321101343 is 3431011231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321101343 - 2⁹ = 1321100831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1321101343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321101043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660550671 + 660550672.

It is an arithmetic number, because the mean of its divisors is an integer number (660550672).

Almost surely, 2^1321101343 is an apocalyptic number.

1321101343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321101343 is an equidigital number, since it uses as much as digits as its factorization.

1321101343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1321101343 is about 36346.9578231796. The cubic root of 1321101343 is about 1097.2663091771.

Adding to 1321101343 its reverse (3431011231), we get a palindrome (4752112574).

The spelling of 1321101343 in words is "one billion, three hundred twenty-one million, one hundred one thousand, three hundred forty-three".